Article information
Year 2019 Volume 69 Issue 3 Page 353-360
Title:
Shear Bond Strengths of Zirconia/Resin Cement Using Different Adhesives
Keyword(s):
Shear bond strength, Zirconia, Resin cement, Adhesive, MDP
Abstract:
The purpose of this study was to evaluate the effects of two different adhesives containing phosphate
monomer [Single Bond Universal+dual activator (SU), Excite F DSC (EX)] and one primer containing MDP [Alloy
primer (AP)] application on zirconia/resin cement bond strength. Sixty zirconia disks (6 mm diameter, 4 mm thick)
were prepared and embedded in dental gypsum. Specimens were polished with 600 grit silicon carbide paper. The
samples were randomly divided into six groups (N=10 in each group) according to different treatments applied on
zirconia surfaces: Group1 (AP), Group2 (SU), Group3 (AP+SU), Group4 (EX), Group5 (AP+EX) and Group6 (no tx). A
silicone template (3 mm diameter, 2 mm thick) was placed on top of treated zirconia surface. The resin cement
was filled into the mold and then light-cured for 40 seconds. All bonded specimens were kept in distilled water at
37oC for 24 hours and they were subjected to shear bond strength measurement using a universal testing machine
at a crosshead speed of 0.5 mm/min. The data were statistically analyzed using one-way ANOVA and Tukey’s test
(α=0.05). The shear bond strengths of Group1 to Group 6 were AP;14.12±2.56, SU;19.25±2.00, AP+SU;23.53±2.15,
EX;18.93±1.93, AP+EX;22.91±2.14, and no tx;8.05±1.64 MPa, respectively. The bond strengths of Group3 and Group5
were significantly higher than those of Group1, Group2, Group4, and Group6 (p<0.05). However, Group6 showed the
lowest bond strength (p<0.05). In conclusion, the primer containing MDP application followed by adhesive application
increased shear bond strength between zirconia and resin cement. The universal adhesive/adhesive containing
phosphate monomer may be alternative to the primer containing MDP for zirconia surface treatment.